Joslin is a distinctive girls' name in United States, ranking #4143 in 2001 with 30 recorded births. The name reached its all-time peak in 2010 with 67 births ranking #2677. Since 1996, the popularity has increased by 42.9%. In 2001, approximately 1 in every 60,019 girls born was named Joslin. FALLING Recent data shows the name is currently falling.